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// RUN: %clang_cc1 -emit-llvm -o - %s | grep memcpy
// PR1421
struct A {
char c;
int i;
};
struct B {
int c;
unsigned char x;
};
union U { struct A a; struct B b; };
void check(union U *u, union U *v) {
*u = *v;
}
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